diff --git a/acinclude.m4 b/acinclude.m4
index 0d28d44156..162a3e9c3f 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1001,9 +1001,9 @@ case $AFS_SYSNAME in *_linux* | *_umlinux*)
 
 		 dnl Function existence checks
 
-		 AC_CHECK_LINUX_FUNC([__vfs_read],
+		 AC_CHECK_LINUX_FUNC([__vfs_write],
 				     [#include <linux/fs.h>],
-				     [__vfs_read(NULL, NULL, 0, NULL);])
+				     [__vfs_write(NULL, NULL, 0, NULL);])
                  AC_CHECK_LINUX_FUNC([bdi_init],
 				     [#include <linux/backing-dev.h>],
 				     [bdi_init(NULL);])
diff --git a/src/afs/LINUX/osi_compat.h b/src/afs/LINUX/osi_compat.h
index 14762fab1c..13915b9d17 100644
--- a/src/afs/LINUX/osi_compat.h
+++ b/src/afs/LINUX/osi_compat.h
@@ -648,7 +648,7 @@ afs_d_invalidate(struct dentry *dp)
 static inline int
 afs_file_read(struct file *filp, char __user *buf, size_t len, loff_t *pos)
 {
-#if defined(HAVE_LINUX___VFS_READ)
+#if defined(HAVE_LINUX___VFS_WRITE)
     return __vfs_read(filp, buf, len, pos);
 #else
     return filp->f_op->read(filp, buf, len, pos);
@@ -658,7 +658,7 @@ afs_file_read(struct file *filp, char __user *buf, size_t len, loff_t *pos)
 static inline int
 afs_file_write(struct file *filp, char __user *buf, size_t len, loff_t *pos)
 {
-#if defined(HAVE_LINUX___VFS_READ)
+#if defined(HAVE_LINUX___VFS_WRITE)
     return __vfs_write(filp, buf, len, pos);
 #else
     return filp->f_op->write(filp, buf, len, pos);
diff --git a/src/afs/LINUX/osi_vnodeops.c b/src/afs/LINUX/osi_vnodeops.c
index d0585458da..d935cf56df 100644
--- a/src/afs/LINUX/osi_vnodeops.c
+++ b/src/afs/LINUX/osi_vnodeops.c
@@ -825,7 +825,7 @@ struct file_operations afs_file_fops = {
 #ifdef STRUCT_FILE_OPERATIONS_HAS_READ_ITER
   .read_iter =	afs_linux_read_iter,
   .write_iter =	afs_linux_write_iter,
-# if !defined(HAVE_LINUX___VFS_READ)
+# if !defined(HAVE_LINUX___VFS_WRITE)
   .read =	new_sync_read,
   .write =	new_sync_write,
 # endif